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350 Bare Block (1986–later Style)

Production Based Blocks

When building a mild Small Block performance engine or a replacement for a stock engine, brand-new, production-based blocks from ChevroletPerformance give you strength, accuracy and peace of mind that can’t be assured in a rebuilt core. And unlike so many of the used cores, ours all feature 4-bolt main caps for extra strength – there’s no reason to settle for a 2-bolt block. Each new cylinder block is machined to production-spec tolerances and is manufactured to the exact specifications of pre-1986 or 1986 and later engines.